Laboratory strength tests and applications for Winnipeg clay

Abstract

This thesis deals with the careful evaluation in the laboratory of shear strength parameters of typical undisturbed Winnipeg clay samples. Included was the investigation of the shear strength parameters in terms of total and effective stresses. Triaxial tests using drained and undrained loading in both compression and extension were employed. Residual and peak effective stress parameters were obtained by direct shear tests. Procedures and results are included. The preconsolidation pressures were estimated by using consolidation test data, Mohr circle envelope, 1/2(o1-o3) vs o3, stress path and also from the Af, parameter. Examples are given with comments on the application of these parameters to practical foundation and slope stability problems.